Plan:
we are going to time how longeach solution takes to disolve in water.
10 ml of water
a small amount of the solution
Hypothesis: I think the zinc oxide will dissolve faster then the copper 2 sulfate.
Independent variable: type of solute, and levels- Z2O and CuSO2
Dependent varialble: the time it takes to dissolve.
What happened:
The Copper 2 Sulfate created a solution and the zinc oxide made a suspension.
April, 13 -Solutions- (kool-aid lab)
Materials:
triple beam balance
koolaid poweder
test tubes
water
Plan:
We are going to put 1g, 2g, and 3g in 20mL of water.
hypothosis: The more powder we add in the darker red the color will be
Independent variable: amount of solute
Dependent variable:
April 14 -Reveiw Questions with Vocaroo-
Which of the following best describes describes chicken noodle soup?
a) element b) mixture c) compound d) solution
2. When nail polish is dissolved in acetone, which substance is the solute and which is the solvent?
3. Describe a procedure to separate a mixture of salt, finely ground pepper, and pebbles?
April 20 -Solubility Graph-
April 26 -chemical reactions-
Sodium bicarbonate- a heartburn medication- harmful if you use more then 2 teaspoons a day- NaHCo3 http://www.jtbaker.com/msds/englishhtml/c0357.htm
calcium chloride- harmful if swallowed or inhaled- used in concrete and plants- CaCl2 bromothymal blue- harmful if swallowed, ph indecater, changed color over the range.- C27H28Br205S
Question: How will the mass of the reactants compare to the mass of the products in a reaction that produces a solid precipitate?
Indepedant Variable: the mass of the reactants (g)
Dependant variable: the mass of the products (g)
Constants: the mass of the glass wear
What we saw: When we combined the two chemicals they turned bright yellow. This created a suspension because it was opaque.
May 12 -Alka-Seltzer Lab-
Question: How will the mass of a reactant and the mass of the product compare to the mass of the reactant that produces a gas?
Hypothosis:
IV: mass of the reactant (g)
DV: mass of the product (g)
constants: balance, amount of water. glass wear
Summary: Between the reactants adn the products there was little change
Rachel, Julie, and Danae
April 6, -Mixtures-
Materials:- test tube rack
- test tubes(4)
April 6, -Mixtures-
April, 13 -Solutions- (kool-aid lab)
April 14 -Reveiw Questions with Vocaroo-
April 20 -Solubility Graph-
April 26 -chemical reactions-
May 10 -The Law of Conservation of Mass-
May 12 -Alka-Seltzer Lab-
- graduated cylender
- Zinc Oxide
- Copper 2 Sulfute
- lab scoop
copper 2 sufate information-Table of Contents
http://cartwright.chem.ox.ac.uk/hsci/chemicals/copper_II_sulfate.html
Harmful when injested.
Safety
- Goggles
Plan:we are going to time how longeach solution takes to disolve in water.
10 ml of water
a small amount of the solution
Hypothesis: I think the zinc oxide will dissolve faster then the copper 2 sulfate.
Independent variable: type of solute, and levels- Z2O and CuSO2
Dependent varialble: the time it takes to dissolve.
What happened:
The Copper 2 Sulfate created a solution and the zinc oxide made a suspension.
April, 13 -Solutions- (kool-aid lab)
Materials:- triple beam balance
- koolaid poweder
- test tubes
- water
Plan:We are going to put 1g, 2g, and 3g in 20mL of water.
hypothosis: The more powder we add in the darker red the color will be
Independent variable: amount of solute
Dependent variable:
April 14 -Reveiw Questions with Vocaroo-
- Which of the following best describes describes chicken noodle soup?
a) element b) mixture c) compound d) solution2. When nail polish is dissolved in acetone, which substance is the solute and which is the solvent?
3. Describe a procedure to separate a mixture of salt, finely ground pepper, and pebbles?
April 20 -Solubility Graph-
April 26 -chemical reactions-
Sodium bicarbonate- a heartburn medication- harmful if you use more then 2 teaspoons a day- NaHCo3http://www.jtbaker.com/msds/englishhtml/c0357.htm
calcium chloride- harmful if swallowed or inhaled- used in concrete and plants- CaCl2
bromothymal blue- harmful if swallowed, ph indecater, changed color over the range.- C27H28Br205S
http://edu.glogster.com/edit/glog/?action=glogs_create
http://xoxocurly.edu.glogster.com/false/
May 10 -The Law of Conservation of Mass-
Question: How will the mass of the reactants compare to the mass of the products in a reaction that produces a solid precipitate?Indepedant Variable: the mass of the reactants (g)
Dependant variable: the mass of the products (g)
Constants: the mass of the glass wear
What we saw: When we combined the two chemicals they turned bright yellow. This created a suspension because it was opaque.
May 12 -Alka-Seltzer Lab-
Question: How will the mass of a reactant and the mass of the product compare to the mass of the reactant that produces a gas?Hypothosis:
IV: mass of the reactant (g)
DV: mass of the product (g)
constants: balance, amount of water. glass wear
Summary: Between the reactants adn the products there was little change